"Make curtains of goat hair for the tent over the tabernacle--eleven altogether.
All eleven curtains are to be the same size1--thirty cubits long and four cubits wide.
References for Exodus 26:8
Join five of the curtains together into one set and the other six into another set. Fold the sixth curtain double at the front of the tent.
Make fifty loops along the edge of the end curtain in one set and also along the edge of the end curtain in the other set.
Then make fifty bronze clasps and put them in the loops to fasten the tent together as a unit.2
References for Exodus 26:11
As for the additional length of the tent curtains, the half curtain that is left over is to hang down at the rear of the tabernacle.
The tent curtains will be a cubit longer on both sides; what is left will hang over the sides of the tabernacle so as to cover it.
References for Exodus 26:13